KR102358809B1 - Intake filter assambly for vehicle - Google Patents

Abstract

The present invention relates to an intake filter structure for a vehicle, and more specifically, to an intake filter structure for a vehicle, which evenly projects intake air onto a filter element to maintain filtering performance by providing sufficient rigidity to a pleated unit to prevent a pleated structure of the filter element filtering the intake air from being destroyed or deformed in an irregular direction by intake pressure through natural intake or a supercharger, and can more effectively prevent a decrease in an intake amount due to a decrease in air permeability of the intake air, filter clogging, and the like.

Description

Intake filter assembly for vehicle

The present invention relates to an intake filter structure for automobiles, and more particularly, to prevent the pleated structure of a filter element filtering intake air from being destroyed or deformed in an irregular direction by natural intake or intake pressure through a supercharger. By imparting sufficient rigidity to the part, intake air is evenly projected on the filter element to maintain filtering performance, and also to an intake filter structure for automobiles that can more effectively prevent a decrease in intake amount due to reduced air permeability, filter blockage, etc. .

The automobile is provided with an intake device for supplying proper air toward the internal combustion engine for desirable combustion of fuel for driving the automobile internal combustion engine.

The intake device is a concept including all kinds of piping systems for inducing naturally aspirated air to the internal combustion engine, sensors and valves for controlling the intake air amount, and artificial supercharging means, for example, a turbocharger, a supercharger, and the like. , an intake filter structure for filtering various foreign substances contained in the air is also included.

If impurities such as dust are mixed in the air sucked into the internal combustion engine, the cylinder or piston is damaged, and the abrasion of other lubricating parts is accelerated by mixing in engine oil. Accordingly, the intake filter structure is essentially mounted on the intake system of the internal combustion engine.

As a prior art of an intake filter, Utility Model Registration No. 20-0295351 discloses a structure of an intake filter using a filter element provided in a pleated annular shape.

As such, most filter elements used in filters use a pleated or folded filter element structure to maximize the projected area of air. Due to the structural characteristics of the device, the problem arises that the shape is crushed or deformed by the suction pressure of air due to the fact that sufficient rigidity is not retained.

In particular, when the shape of the filter element is deformed, the folds overlap each other to induce a flow resistance of intake air or generate an occluded area through which intake air cannot pass. Because the flow rate is greatly reduced due to the resistance in the tube during the period, it is not possible to keep the fuel-air mixture ratio constant, or it becomes a big obstacle to improving the compression ratio, which causes a decrease in power efficiency.

In addition, there was a problem in that an abnormal air flow was generated due to a mismatch in the supply of intake air to the inside of the intake filter structure, thereby affecting emotional quality, such as causing noise.

Registered Utility Model Publication No. 20-0295351

The present invention has been created to solve the problems in the prior art, and prevents the wrinkle structure of the filter element filtering the intake air from being destroyed or deformed in an irregular direction by the intake pressure through the natural intake or the supercharger. By providing sufficient rigidity to the pleats so that the intake air is evenly projected on the filter element to maintain the filtering performance, and also to more effectively prevent the reduction in intake amount due to reduced air permeability and filter clogging, an intake filter structure for automobiles Its purpose is to provide

The present invention provides a means for achieving the above object, comprising: a filter element in which a plurality of pleats folded in half are continuously formed; a support for supporting the pleats of the filter element from the inside; an upper plate formed on the upper part of the support part to close the upper part; a lower plate formed on the lower part of the support part to close the lower part; and a back plate formed at the rear of the support part through which the exhaust port is formed, wherein the filter element is coupled to continuously cover an open portion of the support part except for the back plate. The air that has passed through the filter element is introduced into the support part and then exhausted through the exhaust port.

In addition, the support portion, the core constituting the center; a filter support configured to be offset by a predetermined distance to the outside of the core and inserted into the pleats; and a connecting rod connecting the core and the filter support.

In addition, the filter support may include: a pair of horizontal supports that are in contact with the back plate, are spaced apart from each other in the vertical direction with the exhaust port in the center, and extend in the left and right directions; a pair of curved supports extending to be curved in a 'U' shape toward the front from each of the pair of horizontal supports so that the core is accommodated therein; and a plurality of connecting supports that connect each of the pair of curved supports, but are formed at equal intervals along the 'U'-shaped traveling direction of the curved support; and a slit into which the wrinkle is inserted is provided between the adjacent connecting supports. characterized.

In addition, each of the plurality of connecting support, each of the upper horizontal plate is formed extending outward from the upper curved support; a lower horizontal plate extending outward from the lower curved support; and a vertical bar connecting the ends of the upper horizontal plate and the lower horizontal plate.

In addition, the vertical length of the vertical bar is characterized in that it is configured to be shorter than the vertical length of the filter element.

The present invention provides sufficient rigidity to the pleats to prevent the pleated structure of the filter element filtering the intake air from being destroyed or deformed in an irregular direction by natural intake or intake pressure through the supercharger, so that the intake air is evenly distributed in the filter element. It is projected to maintain the filtering performance, and also provides an effect of more effectively preventing a decrease in suction amount due to a decrease in air permeability, filter clogging, and the like.

1 is a view showing the overall appearance of an intake filter assembly according to the present invention.
2 is a view showing an exploded configuration of an intake filter assembly according to the present invention.
Figure 3 is a view showing the external appearance of the support.
4 is a view showing a planar configuration of the intake filter assembly according to the present invention.
5 is a view showing another embodiment of the support according to the present invention.
6 is a view showing one side of the guide plate.
7 to 8 are views for explaining the operation of the guide plate.
9 to 11 are views for explaining a manufacturing process of the intake filter assembly according to the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

Prior to the detailed description of the invention, for convenience of explanation, if a non-strict direction reference is specified with reference to the accompanying drawings, in the state as shown in FIG. 1, up and down (y), before and after (z), left and right ( x), and directions are specified according to this criterion in the descriptions related to other drawings.

1 is a view showing the overall appearance of an intake filter assembly according to the present invention, FIG. 2 is an exploded view of the intake filter assembly according to the present invention, FIG. 3 is a view showing the exterior of the support part, and FIG. 4 is It is a view showing the planar configuration of the intake filter assembly according to the present invention, Fig. 5 is a view showing another embodiment of the support according to the present invention, Fig. 6 is a view showing one side of the guide plate, and Figs. is a view for explaining the action of the guide plate, and Figures 9 to 11 are views for explaining the manufacturing process of the intake filter assembly according to the present invention.

An intake filter structure for a vehicle (hereinafter, referred to as an intake filter structure) according to the present invention is largely as shown in FIGS. 1 to 3 , a filter element 10 , a support part 50 , an upper plate 20 , a lower plate 30 . ) and the back plate 40 may be defined as including.

First, the filter element 10 has a structure in which a plurality of folds 11 folded in half are continuously formed. It is surrounded in the shape of a barrel between the components to filter out foreign substances from the outside air.

The folded wrinkle portion 11 may be formed as a mountain 12 protruding to one side and a valley 13 protruding to the other side.

The filter element 10 is a filter used in a conventional intake filter in a line capable of adsorbing and filtering substances that cause abnormal combustion when directly introduced into an internal combustion engine, such as various particulate substances, gases, and volatile organic compounds contained in air. The element may be used as it is.

The upper plate 20 , the lower plate 30 , and the back plate 40 constitute the exterior of the intake filter structure, and the support 50 may support the filter element 10 inside the exterior.

The upper plate 20, the lower plate 30, the back plate 40, and the support part 50 may be integrated into a single structure by continuous injection, and related matters will be elaborated in the description of the manufacturing process to be described later.

The support 50 serves to support the pleats 11 of the filter element 10 from the inside. The support part 50 provides rigidity to prevent the pleated structure of the filter element 10 from being destroyed or permanently deformed by the pressure of intake air (hereinafter referred to as intake air), and in particular, adjacent pleats 11 are mutually It plays a role of supporting each wrinkle part 11 at regular intervals so as not to deform in the overlapping direction to reduce the permeability of intake air or to generate an occluded area. A detailed description related to the support part 50 will be described later.

Next, the upper plate 20 and the lower plate 30 are respectively formed on the upper and lower portions of the support part 50 to serve to close the upper part and the lower part of the support part 50 . The upper and lower ends of the filter element 10 may be in contact with the upper plate 20 and the lower plate 30 , respectively.

The back plate 40 is formed at the rear of the support part 50 , and the exhaust port 41 is formed through, and the intake air purified through the filter element 10 is exhausted in a direction toward the internal combustion engine through the exhaust port 41 . can be

The upper end of the back plate 40 is connected to the upper plate 20 and the lower end is connected to the lower plate 30, respectively, so that when viewed from one side, the back plate 40, the upper plate 20 and the lower plate 30 are 'C'-shaped to form a connection structure.

Accordingly, the intake filter assembly is configured to allow intake air to be sucked in all directions on the front and side except for the portion shielded by the back plate 40 , the upper plate 20 , and the lower plate 30 .

In this case, the filter element 10 may be coupled to continuously cover the open portion of the support part 50 except for the back plate 40 .

In other words, the filter element 10 continuously covers the left and right side surfaces and the front surface of the intake filter assembly, thereby increasing the filtering efficiency by contacting intake air sucked in an irregular direction of the intake filter assembly over a wider area.

The intake air passing through the filter element 10 may be introduced into the support part 50 and then exhausted through the exhaust port 41 . Although not shown, the exhaust port 41 may be directly connected to a pipe facing an intake device such as a surge tank, a throttle valve, and an intake manifold for controlling the intake air flow of the internal combustion engine.

On the other hand, the exhaust port 41 is provided with a diameter gradually widening toward the outside has a structure to improve the exhaust efficiency of the outside air.

The support part 50 may be accommodated in the inner space provided by the upper plate 20 , the lower plate 30 , and the back plate 40 to support the filter element 10 . In this case, since the support part 50 is in direct contact with the filter element 10 , the intake air that has passed through the filter element 10 may be directly projected onto the support part 50 , and thus unnecessary resistance is applied to the intake air. It has a structure that enables supply by increasing the supply speed of intake air toward the internal combustion engine by significantly improving the flowability of intake air introduced into the center of the support part 50 as well as preventing it from falling.

To this end, the support 50 may be largely exemplified as including the core 100 , the filter support 200 , and the connecting rod 300 .

The core 100 , the filter support 200 , and the connecting rod 300 may be injection-molded as a single injection molded product.

The core 100 constitutes the center of the support part 50 and may be provided in a hollow cylindrical shape in consideration of weight reduction of the intake filter assembly.

The front of the core 100 is formed in a streamlined structure to minimize the flow resistance of intake air. 100) is provided with a structure to guide the flow of intake air to the exhaust port 41 of the back plate 40 arranged to be spaced apart a predetermined distance.

The exhaust port 41 and the core 100 may be arranged on the same line in the front-rear direction. The upper and lower surfaces of the core 100 may be in contact with the upper plate 20 and the lower plate 30, respectively, so that the core 100 at the center of the upper plate 20 and the lower plate 30 connects the upper plate 20 and the lower plate 30. They play the role of support stoppers that support each other apart.

Next, the filter support 200 is configured to be offset so as to be spaced apart from the outside of the core 100 by a predetermined distance, and is inserted into the pleats 11 to keep the shape of the pleats 11 constant.

The upper and lower surfaces of the filter support 200 are provided to be spaced apart from the upper plate 20 and the lower plate 30 by a predetermined distance, respectively, and in the case of the rear, may be integrated and fixed to the back plate 40 .

The filter support 200 is inserted into each of the pleats 11 constituting the filter element 10 to maintain a gap between the adjacent pleats 11 and has a structure to prevent deformation.

For example, the filter support 200 is in contact with the back plate 40, with the exhaust port 41 in the center, is vertically spaced apart from each other, and is provided with a pair of horizontal supports 210 extending in the left and right directions, and the core 100 inside. ) to be accommodated, a pair of curved supports 220 and a pair of curved supports 220 that are formed to extend to be curved in a 'U' shape toward the front from each of the pair of horizontal supports 210 Connect each of the curved supports 220 It may be exemplified as including a plurality of connecting supports 230 formed at equal intervals along the 'U'-shaped traveling direction of the curved support 220 .

The horizontal support 210 may be integrated with the back plate 40 by a double injection method, and has a structure that is inserted into the back plate 40 at a predetermined depth.

On the other hand, the connecting rod 300 serves to connect the core 100 and the filter support 200, at this time, the connecting rod 300 is provided to connect each of the curved support 220 and the core 100. can The connecting rod 300 is formed in plurality to ensure sufficient connection strength between the core 100 and the filter support 200 .

Again, the connecting support 230 has a shape that protrudes toward the inside of the wrinkle part 11 in a state in which each of the curved supports 220 spaced up and down is connected, and the 'U'-shaped moving direction of the curved support 220 is A plurality of connection supports 230 arranged at equal intervals along the outside, the filter element 10 has a structure that is also formed to be arranged to be curved in a 'U' shape.

Each of the connecting supports 230 may be inserted into the inner side of the mountain 12 of the wrinkle part 11, and the slits 240 provided between the adjacent connecting supports 230 include the valleys 13 of the pleats 11. ) may be provided to be inserted.

That is, the mountain 12 is supported by one connecting support 230, and the valley 13 is supported by at least the adjacent connecting supports 230 on both sides, and thus the connection support 230 in contact with each wrinkle part 11. They can keep the folding angle of each wrinkle part 11 constant, so that it is possible to prevent a decrease in permeability or a decrease in filtering performance that occurs when the wrinkle part 11 is completely folded or the folded part is unfolded and deformed.

On the other hand, each of the plurality of connecting supports 230 is an upper horizontal plate 231 extending outward from the upper curved support 220, and a lower horizontal plate 232 extending outward from the lower curved support 220. and a vertical bar 233 connecting ends of the upper horizontal plate 231 and the lower horizontal plate 232 .

At this time, the upper horizontal plate 231 and the lower horizontal plate 232 are formed to be gradually narrowed in width W2 toward the outside, so as to have a complementary structure to the inner side of the wrinkle part 11 .

Accordingly, the separation space between the inner side of the pleats 11 and the upper horizontal plate 231 and the lower horizontal plate 232 is minimized to prevent vibration or movement of the filter element 10 supported on the filter support body 200 . In addition to being able to effectively limit, the vertical bar 233 provided at the ends of the upper horizontal plate 231 and the lower horizontal plate 232 can be deeply positioned up to the inner end edge of the wrinkle part 11 .

The vertical length L2 of the vertical bar 233 is preferably shorter than the vertical length L1 of the filter element 10 . In other words, the vertical separation distance between the upper horizontal plate 231 and the lower horizontal plate 232 is at least formed shorter than the vertical length L1 of the filter element 10, so that the vertical bar 233 as well as the upper horizontal plate ( 231 ) and the lower horizontal plate 232 have a structure that allows them to be inserted into the pleats 11 , so that deformation in an irregular direction of the filter element 10 can be more effectively limited.

Meanwhile, in order to improve the performance of the internal combustion engine, it is necessary to reduce the internal resistance of the intake air passing through the intake filter structure to increase the flow rate. However, when the intake air passes through the filter element 10, the speed of the intake air is inevitably lowered. Accordingly, in another embodiment of the present invention, the flow rate of the intake air passing through the filter element 10 is configured to be faster. and exhaust toward the internal combustion engine to further improve the performance of the internal combustion engine.

For example, as shown in FIGS. 5 to 7 , the support part 50 in this embodiment is mounted symmetrically on both left and right sides of the core 100 , and forms an induction space 410 between the sidewalls of the core 100 for intake It may further include a pair of guide plates 400 for guiding the to the center.

Accordingly, intake air introduced into the front end of the induction space 410 can be exhausted through the exhaust port 41 immediately after being discharged to the front end of the induction space 410 , while each guide plate 400 is formed in the induction space 410 . ) to relatively expand the open area of the front end, and at the same time, the width of the induction space 410 may be arranged obliquely so as to be gradually narrowed toward the rear end, and at the same time be formed to be curved with a certain curvature.

Accordingly, a larger amount of intake can be induced by the front end of the induction space 410 , and the pressure of intake air discharged to the rear end of the induction space 410 is lowered, thereby making it possible to form a faster flow rate of intake air. .

On the other hand, the guide plate 400 may be coupled in such a way that it is mounted on the connecting rod 300, at this time, at the upper end and the lower end of the guide plate 400, the protrusion 420 protruding in the shape of 'a' or 'b' ) may be formed and mounted on the connecting rod 300 .

Accordingly, as shown in FIG. 8 , the distance between the guide plate 400 and the core 100, the guide plate disposed at an angle, in a manner of arbitrarily moving the guide plate 400 mounted on the connecting rod 300 . The angle of 400 and the like can be adjusted in the assembling step according to the situation.

Hereinafter, a method of manufacturing the intake filter assembly according to the present invention will be briefly described.

First, by inserting the injection-molded support part 50 into the mold, as shown in FIG. 9, the upper plate 20 and the lower plate 30 are double-injected so that the upper and lower parts of the support part 50 are integrated with each other, and the upper plate 20 and A filter element 10 is coupled between the lower plates 30 as shown in FIG. 10 . After that, the space between the upper and lower ends of the filter element and the upper plate 20 and the lower plate 30 is sealed using a sealing agent.

Next, the back plate 40 is double-injected as shown in FIG. 11 by inserting the structure shown in FIG. 10 into the mold. At this time, so that the horizontal support 210 of the filter support 200 can be included in a part of the back plate 40, the upper plate 20, the lower plate 30, the back plate 40 and the support part 50 are mechanically connected to each other. Constructs a single structure.

Thereafter, the rear end of the free-end filter element 10 is sealed to the back plate 40 using a sealing agent to complete the manufacture of the intake filter structure.

In this way, each configuration except for the filter element 10 is not easily damaged by an assembling method, but is formed as a single structure of an injection method through continuous double injection, so that it is not easily damaged by minor shocks or vibrations outside the vehicle. As well as ensuring sufficient bonding strength, it is possible to significantly simplify the manufacturing process, thereby improving productivity.

In summary, the present invention provides sufficient rigidity to the pleats to prevent the pleated structure of the filter element filtering the intake air from being destroyed or deformed in an irregular direction by natural intake or intake pressure through the supercharger, thereby providing the filter element with sufficient rigidity. Intake air is evenly projected to maintain filtering performance, and also provides an effect of more effectively preventing a decrease in suction amount due to reduced air permeability, filter clogging, and the like.

The embodiments of the present invention described above are merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

10: filter element
20: top plate
30: lower plate
40: backboard
50: support
100: core
200: filter support
300: connecting rod
400: guide plate
210: horizontal support
220: curved support
230: connection support
240: slit

Claims (5)

a filter element in which a plurality of pleats folded in half are continuously formed;
a support for supporting the pleats of the filter element from the inside;
an upper plate formed on the upper part of the support part to close the upper part;
a lower plate formed in the lower part of the support part to close the lower part; and
Doedoe formed at the rear of the support, a back plate through which the exhaust port is formed; includes,
The filter element is coupled to continuously cover the open portion of the support except for the back plate. The air that has passed through the filter element is introduced into the support part and then exhausted through the exhaust port,
The support part,
the core constituting the center;
a filter support configured to be offset by a predetermined distance to the outside of the core and inserted into the pleats; and
Includes; a connecting rod connecting the core and the filter support;
The filter support,
a pair of horizontal supports that are in contact with the back plate and are spaced apart from each other in the vertical direction with the exhaust port in the center and extend in the left and right directions;
a pair of curved supports extending to be curved in a 'U' shape toward the front from each of the pair of horizontal supports so that the core is accommodated therein; and
A plurality of connecting supports that connect each of the pair of curved supports, but are formed at equal intervals along the 'U' shape of the curved support, are included;
A slit into which the wrinkle part is inserted is provided between the adjacent connecting supports,
Each of the plurality of connection supports is,
an upper horizontal plate extending outward from the upper curved support;
a lower horizontal plate extending outward from the lower curved support; and
Includes; a vertical bar connecting the ends of the upper horizontal plate and the lower horizontal plate;
An intake filter structure for a vehicle, characterized in that the vertical bar is shorter than the vertical length of the filter element. The method according to claim 1,
The support portion is mounted symmetrically on both left and right sides of the core, and forms an induction space between the sidewalls of the core to guide the intake air to the center. delete delete delete

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